Rotary engine



\(NO Model. 4 Sheets-Sheet 1.

J. BURGERMBISTER.

ROTARY ENGINE.

@ted June 29,1897.

Pat E M,

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(No Model.)

J. BURGERMEISTER.

ROTARY ENGINE.

Patented June 29,1897.

(No Model.) 4 sheets-sheet,- a.

J. BURGERMEISTER.

ROTARY ENGINE.

Patented June 29, 1897.

(No Model.) 4 Sheets-Sheet 4.

J. BURGBRMEISTER.

ROTARY ENGINE. No. 585,333. Patented June 29, 1897.

NIIE STATES rrrcn.

ATENT ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 585,333, dated June 29,1897. Application filed February 29, 1896. erial No. 581,387. (Nomodel.)

To a whom it may concern:

Be it known that I, J OHANN BURGERMEIS- TER, clock-maker, of Hogyesz,Austria-Hungary, have invented Improvements in Rotary Engines, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to a rotary engine in which the steam or otherpressure fluid acts directly upon a vane secured to the driving-shaft.

Four different constructions of the rotary engine are shown on theaccompanying sheets of drawings.

Figures 1 to 3 show, respectively, in vertical section, cross-section,and in plan one form of the engine. Figs. 4 and 5 show details of theconstruction. Fig. 6 is a longitudinal section, and Fig. 7 across-section, of a modification. Figs. 8 and 9 show anothermodification, while Figs. 10 and 11 show, respectively, in side view andsection yet another modification.

The working of the engine shown in Figs. 1 to 5 is as follows: Thesemicircularblock a for controlling the steam-supply, by alternately, asit revolves, covering over or exposing the port 6, is secured to thedisk I), which is keyed to and rotates with the shaft 0. This disk mayhave teeth on its periphery, as at Fig. 5, if it is desired to transmitpower. Steam is admitted by the pipe 01 and passes through the port 6into the cylinder 71, (see also Fig. 4,) where it acts directly upon thevane f of the shaft 0, and as a consequence causes both to rotate in thedirection of the arrow. As soon as in its rotation the nave passes theexhaust-port g the steam escapes through said port into the atmosphere.The fiy-Wheel a has an elliptical cam part 19, by which the s1ide-valvem is operated. As the momentum of the fiy-wheel maintains the rotationof the shaft after the steam has escaped through the exhaust-port g, itfollows that the vane f continues its rotation, and, further, the partsare so arranged that when the vane approaches the valve m the latter islifted up out of the way by the elliptical part 10 of the fly-wheelacting on the upper exposed part m of said valve. This part m, as willbe seen, Fig. 1, has friction-rollers m between which the flange of theliy-wheel passes. flywheeleventually, as will readily be understood,force the slide-valve m back again until it bears tight against theshaft 0. As a result of the continued rotation of the shaft 0 the port 6is again uncovered by the block a and steam gains access to the cylinderh and gives a fresh impulse to the vane f until it is out off the secondtime by the continued revolution of said block a. The action beforedescribed continues so long as steam is supplied to the engine.

To cause the shaft 0 to rotate in a reverse direction, the outlet andinlet ports d and 9 must be correspondingly reversed.

In the arrangement shown at Figs. 6 and 7 the valve m is raised at theproper times by means of a cam-like projection 7t, fixed to the shaft 0and to the back of the vane f. The valve is caused to fall again bymeans of a spring, as shown, or by gravity. The steam enters at d andescapes at t'. The supply of steam is controlled in the same way asbefore.

In the arrangement shown at Figs. 8 and 9 the only difference is in thedistribution of the steam. The steam which enters the hollow fixedcentral shaft 0 at 90 passes therethrough and enters the cylinders 7tthrough the port y, where it acts upon the vane f and slide-valve andimparts a rotary movement to the cylinder and the fly-wheel securedthereto. As soon as the cylinder has turned sufficiently far for the armfixed to the shaft to beginraising the slide-valve the steam will enterthrough the opening 0 of the sleeve .2 and finally escape through theopening 00 into the shaft 0 and from thence by the outlet y to theatmosphere.

The fourth arrangement, Figs. 10 and 11, is suitable for engines havingno fly-wheel such as ships engines, for instance. In this case the steamenters through the ports d and 6 into the cylinder h and imparts arotation to the shaft 0 and vane f in the direction indicated by thearrow until the cam-shaped projection 2, fixed to the shaft, slightlyraises the slide-valve 'm, whereupon the steam forces up the valve untilit uncovers the exhaustport r, through which the steam escapes.

.The vane fis so arranged as to release the slide-valve after the escapeof the steam,

The continued revolutions of the whereupon it Will fall by its owngravity or under the action of a spring to its original position.Areverse rotation can be produced in this case by merely reversing theinlet and outlet ports.

lVhat I claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In a rotary engine, the combination of a cylindrical casing, a rotaryshaft j ournaled in said casing, a radial vane keyed to the shaft androtating in said casing, a cylindrical steam-supply chest at one end ofthe casing communicating with the interior of the casing through asuitable inlet-port, a rotary head keyed to the shaft and comprising acircular plate forming the outer head of the steam-chest and asemicircular block or pro jection which fits snugly and rotates in thesteam-supply chest and alternately opens and closes the steam-inletport, a radially-movable abutment, means for moving the abutment intoand out of position, and means for transferring power from the rotaryshaft, sub stantially as set forth.

2. In a rotary engine, the combination of a cylindrical casing, a rotaryshaft journaled in said casing, a radial vane keyed to said shaft andWorking in the casing, a movable abutment projecting into the casing inthe path of the radial vane, means for holding said abutment in itsinner position, a cylindrical steam-supply chest at one end of thecasing communicating With the interior of the easin g through a suitableinlet-port, and a rotary head keyed to the shaft and comprising acircular plate forming the outer head of the steam-chest and asemicircular block or pro jection which fits snugly and rotates in thesteam-s11 pply chest and alternately opens and closes the steam-inletport, substantially as set forth.

3. In a rotary engine, the combination of a cylindrical casing, a rotaryshaft journaled in the casing, a radial vane keyed to said shaft andWorking in the casing, a cylindrical steamsupply chest at one end of thecasing, a rotary head comprising a circular plate fitting over the endof the steam-chest and a semi circular block projecting into the chest,a gear-Wheel formed integral With said rotary head, and a suitableradially-movable abutment having means for operating it, substantiallyas set forth.

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

JOHANN BURGERMEISTER.

\Vitnesses:

J OSEF VVIRKMAN, SoLL/iK BELAF.

